JPS61177039A - Mobile communication system - Google Patents

Abstract

PURPOSE:To expand the service range of cordless telephones all over the range outside a city by assigning discrimination Nos. to mobile telephone sets respectively and storing positional information of each mobile telephone set in a subscriber file of a mobile telephone exchange. CONSTITUTION:An individual discrimination No. is assigned to each mobile machine 5 which corresponds to a salve machine of a cordless telephone and base stations 30-34 which correspond to master machines are decentralizedly arranged in a service area to connect the mobile machine with a general telephone set or the mobile machine to another mobile machine and charge the mobile machine subscriber in accordance with the contents of talking. Here, a range covering ranges (radio zones) 20-24 to which radio waves from the base station can be reached is the service area. Since the mobile machine should terminate an optional radio zone to be moved, the mobile machine registers its position every movement to a different radio zone. The base station transmits a pilot signal through an unused channel, but includes its office No. in the pilot signal. At the time of waiting, the mobile machine receives the pilot signal from the base station and checks its office No. When the office No. is changed, the mobile machine sends a positional signal and a private branch exchange (PBX) receiving the positional signal rewrites the positional information in the subscriber file.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mobile radio communication system, and particularly to a mobile communication system as a public communication system that can be connected to an ordinary telephone.

[Prior Art and Problems to be Solved by the Invention] Cordless telephones have conventionally been used as this type of mobile communication. Conventional cordless telephones cannot be used unless the base unit and handset are paired, and for example, even if the handset is taken to another location, it cannot be connected to another base unit. In other words, there was a drawback that the place of use was limited to a narrow range.

[Means for solving problems]

The mobile communication system of the present invention assigns individual identification numbers to mobile devices, which are the slave devices of conventional cordless telephones, and distributes base stations, which are the parent devices, within the service area. It has an exchange that connects mobile terminals to mobile terminals and charges mobile terminal subscribers according to calls.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a system configuration diagram of an embodiment of the present invention. In the figure, 1 is the existing telephone network of Nippon Telegraph and Telephone Public Corporation (Pu
blic Switching Telephone
Network: PSTN). 20, 21, 2
2.23.24 is the range (wireless zone) that radio waves from the base station can reach, and the range covered by this set of wireless zones is the service area of this mobile phone system. 30.3
1.32, 33.34 are base stations, which emit radio waves to mobile devices and receive radio waves from mobile devices within the own line zone. 40, 41, 42, 43, and 44 are subscriber lines from the local telephone office to the base. 5 is a mobile telephone (mobile device). 6 is a subscriber line from the local telephone office to the mobile telephone exchange 7;

7 is a mobile telephone exchange, so-called a private branch exchange (P
r1vate Branch Exchange:
PBX) can be configured. 8 is a regular telephone.

2, 3, and 4 show operational examples of the mobile communication system of the present invention. FIG. 2 is a flowchart for location registration, FIG. 3 is a flowchart for calling from the mobile side, and FIG. FIG. 4 is a flowchart of incoming calls to the mobile side. To make the explanation easier to understand, the phone numbers of mobile phones, base stations, PBXs, and existing phones are #A, #B,
#C and #D.

In the mobile communication system of the present invention, since it is necessary to make an incoming call to any wireless zone in which the mobile device moves, the mobile device registers its location each time it goes to a different wireless zone. In FIG. 2, the base station transmits a pilot signal on an unused channel, and the station number is also included in the pilot signal. When a mobile device is in standby mode, it receives a pilot signal from a base station and checks the station number. When the station number changes, a location signal is sent out, and the PBX that receives this signal updates the location information in the subscriber file.

As shown in Figure 3, when a call is made from a mobile device, the base station that receives the call signal from the mobile device automatically dials the representative number of the PBX, and after the PBX responds, over dials the destination number (#D). and the mobile device number. At PBX, first #A
Validation check
). After that, an automatic call is made to #D and #B
The incoming line from #D and the outgoing line from #D are connected, and if there is a response from #D, billing starts.

The incoming call to the mobile is as shown in FIG.

Connection information from #D to #A is over dialed from #D to the PBX. In PBX, validity check (Valid
ation check), the station to be called is retrieved from the subscriber file. Automatically calls the base station (#B) to be called and over dials (2nd
Dial) to send the number (#A) of the mobile device to be called. The base station transmits a paging signal wirelessly, and the response from the mobile device is notified to the PBX. If this response is received, the PBX connects the incoming and outgoing lines and starts billing.

In the embodiment shown in FIG. 1, the base station and PBX are connected by P8TNK through subscriber lines, but the base station and PBX
It is also possible to connect with a dedicated line.

〔Effect of the invention〕

As explained above, the present invention has the effect of expanding the service range of cordless telephones throughout urban areas by providing mobile telephones with identification numbers and providing location information in the subscriber file of mobile telephone exchanges. .

[Brief explanation of drawings]

Figure 1 is a system configuration diagram of an embodiment of the present invention, Figures 2-
FIG. 4 shows an example of the operation of the present invention, FIG. 2 is a flowchart for location registration, FIG. 3 is a flowchart for mobile call origination, and FIG. 4 is a 70-chart for mobile call reception. 1...PSTN, 20, 21, 22, 23
．． 24... Wireless zone, 30, 31, 32, 3
3.34...Base station, 40, 41.42.43
．． 44...Subscriber line, 5...Mobile telephone, 6...Subscriber line, 7...PBX,
8...This is a regular phone.

Claims (1)

[Claims] a mobile telephone exchange connected to the telephone circuit switching network through a plurality of subscriber lines; a base station connected to the telephone circuit switching network through a plurality of subscriber lines and comprising a radio transceiver and a circuit controller; A mobile communication system characterized by comprising a mobile phone that can send and receive radio signals to and from a base station.